8648B AGILENT TECHNOLOGIES, 8648B Datasheet - Page 27

• Manufacturer Part Number: 8648B
• Description: SIGNAL GENERATOR FREQUENCY / PULSE, 2GHZ
• Manufacturer: AGILENT TECHNOLOGIES

Specifications of 8648B

• Signal Generator Type: Signal
• Bandwidth: 2GHz
• Modulation Type: AM, FM, Phase
• Supply Voltage Range: 90V To 264V
• External Height: 165mm
• External Width: 330mm
• External Depth: 368mm
• Lead Free Status / RoHS Status: na

1. All specifications apply at 23 ± 5 °C.
2. With ALC OFF, specifications apply after the execution of power search.
3. EDGE and IS-136HS traffic channels have the same physical layer. This EDGE signal
R-CCCH
(Reverse-Enhanced Access Channel)
Real-time EDGE
(Option 202, ESG-DP and ESG-D series only)
Description
Option 202 is a firmware personality built upon the internal
real-time I/Q baseband generator (Option UN8). This option will
simulate both uplink and downlink EDGE signals. Data can be gen-
erated internally or externally with continuous data, or bursted and
framed signals. Use custom filtering and framing to keep pace
with the evolving definition of EDGE.
Modulation
Filter
Symbol rate
With ALC ON, specifications apply for pulse repetition rates 10 kHz
and pulse widths 5 µs.
can be used to simulate an IS-136HS trafffic channel for component tests.
Frame offset
Walsh code
Data
Frame length
Data rate
3
(Reverse Common Control Channel) and R-EACH
3 /8-rotating 8PSK (per EDGE
specifications) user-selectable (see
Modulation under Option UN8)
“Linearized” Gaussian (per EDGE
specifications) user-selectable (see
Filter under Option UN8)
User-adjustable (see Symbol rate under
Option UN8) 270.833 kHz (default)
For frame length = 80
1.2, 2.4, 4.8, 9.6,19.2
for RC 3
1.8, 3.6, 7.22, 14.42, 28.82, 57.62 kbps
for RC4
(0 to frame length/1.25) –1
0 to 7
PN9, PN15, fixed 4 bit pattern, user file
5, 10 or 20 mSec
For frame length = 5
For frame length = 10
For frame length = 20
38.4 kbps
19.2, 38.4 kbps
9.6, 19.2, 38.4 kbps
3
personality
2
, 38.4
2
,76.8
2
3
,kbps
Burst Shape
Data structure
EVM performance (typical)
Output power
Standard
Alternate time slot power
level control
(Option UNA, ESG-DP and ESG-D series only)
Amplitude is settled within 0.5 dB in 20 µsecs, +4 to –136 dBm
at 23 ± 5 °C
7 dBm
4 dBm
Option UNB
10 dBm
7 dBm
Defaults to EDGE standard power vs.
time mask with user definable rise and
fall time. Alternatively, upload externally
defined burst shape waveforms.
Time slots may be configured as normal
or custom. The data field of a time slot
can accept a user file, PRBS (PN9 or
PN15), a fixed sequence or external
data. All other fields in a timeslot are
editable.
1
Output frequency
800 MHz
< 0.75%
< 0.75%
1900 MHz
< 1.75%
< 1.00%
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